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Abstract
As dynamic shear rheology (DSR) testing of asphalt binders is becoming the primary mode to evaluate asphalt binders worldwide, an understanding of the rheological performance of asphalt binders has become increasingly important. Such understanding of the basic principles of rheology is essential for those developiong and appllying specifications, as well as developers and producers of new and enhanced roofing binders. This paper disucsses the determination of the complex shear (stiffness) modulus (G*) and phase angle of bituminous binders over a range of temperatures and frequencies when tested in harmonic sinusoidal oscillatory shear mode using a dynamic shear rheometer (DSR) with parallel plate test geometry where both plates are controlled at the same temperature. Rheological measurements and master curves for six different binders used in the manufacture of industrial roofing materials are presented. The data presented are results of testing of unaged and oven-aged binders to include a standard air blown binder, a catalytically air blown binder, and various modified bitumen binders.
As dynamic shear rheology (DSR) testing of asphalt binders is becoming the primary mode to evaluate asphalt binders worldwide, an understanding of the rheological performance of asphalt binders has become increasingly important. Such understanding of the basic principles of rheology is essential for those developiong and appllying specifications, as well as developers and producers of new and enhanced roofing binders. This paper disucsses the determination of the complex shear (stiffness) modulus (G*) and phase angle of bituminous binders over a range of temperatures and frequencies when tested in harmonic sinusoidal oscillatory shear mode using a dynamic shear rheometer (DSR) with parallel plate test geometry where both plates are controlled at the same temperature. Rheological measurements and master curves for six different binders used in the manufacture of industrial roofing materials are presented. The data presented are results of testing of unaged and oven-aged binders to include a standard air blown binder, a catalytically air blown binder, and various modified bitumen binders.
Date
11/2007
11/2007
Author(s)
Geoffrey Rowe; Gaylon Baumgardner
Geoffrey Rowe; Gaylon Baumgardner
Page(s)
103-116
103-116
Keyword(s)
rheology; modified bitumen; aging performance
rheology; modified bitumen; aging performance